从ASP.Net页面获取屏幕截图
我有一个ASP.Net页面有一个按钮，当点击我想拍摄用户的PC屏幕截图并发送到服务器。
I have an ASP.Net page that has a button that when clicked I would like to take a screenshot of the user's PC and send it to a server.
我可以写一些监听程序来运行在服务器上接受这些图像的请求。在哪里我有点朦胧是最好的方式让用户的电脑发送截图。这需要通过为ASP.Net页面编写某种Active X控件来完成吗？如果可能的话，它需要是跨浏览器和操作系统。
I'm ok with writing some sort of listener program to run on the server to accept requests to receive these images. Where I'm a bit hazy is the best way to get the user's PC to send the screenshot. Would this need to be done by writing some sort of Active X control for the ASP.Net page? It needs to be cross browser and operating system if possible.
只是一个正确的方向，我应该使用什么技术将是巨大的。我宁愿自己写这个功能，如果可能的话，使用一个开箱即用的解决方案，我可以看到，这个功能可能会在未来扩展。像WebEx或copilot这样的东西如何管理这个？
Just a point in the right direction and what technologies I should use would be great. I would rather write this functionality myself if possible than use an out of the box solution as I can see that this functionality may be extended in the future. How does something like WebEx or copilot manage this?
感谢
Gavin
清楚地说明，我不是试图从用户PC窃取信息，他们将不得不允许这个功能，它从支持的角度来看更多，所以当客户有问题，他们可以发送他们的页面的屏幕截图
Edit : Just to make it clear I'm not trying to steal information from a users PC, They would have to allow this functionality, Its more from a support point of view so when a clients having issues they can send a screenshot of the page they are on.
如果需要跨浏览器和所有，你应该看看Java（applet）。它可能听起来很旧的时尚，但我认为这是你最好的选择。 ActiveX仅在Windows / IE上工作;）
If it needs to be cross-browser and all, you should take a look at Java(applets). It may sound old fashion but I think it's your best option. ActiveX works on windows/IE only ;)
对于初学者，请看看这个问题，这是非常相似的：是否有办法使用Java屏幕截图并将其保存为某种图片？
For starters, take a look at this question, which is quite similar: Is there a way to take a screenshot using Java and save it to some sort of image?